*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    background-color: #ffffff;
    font: 14px/1.5 Helvetica Neue,Helvetica,Arial,Microsoft Yahei,Hiragino Sans GB,Heiti SC,WenQuanYi Micro Hei,sans-serif;

}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
/* 清除浮动 */
.clearfix:after {
    visibility: hidden;
    clear: both;
    display: block;
    content: ".";
    height: 0
}
.clearfix {
    *zoom: 1
}
.w{
    width: 1226px;
    margin: 0 auto;
}